{
  "manageEntity": {
    "action": "Save",
    "entityId": "1763245153",
    "entityType": "Track",
    "nonce": "0x92923bcdb99570aaaec5d591b5fb63b405622e5a6065f2f5bab25dfb1859ce62",
    "signature": "0xb1dcc662e548d0dac70f46cc93afcc621dc78e7bb98e8d3a15d5865beccb2a0623eed8c2608ccf2d6f31807c72c8af2dcbb7dd2647d399a5cc59df7a732cf9691b",
    "signer": "0x569a23a5D506E4404139fB7510738Ee5b80F5624",
    "userId": "280440301"
  }
}